TY - GEN
T1 - On the degrees of freedom of the 3-user rank-deficient MIMO interference channels
AU - Xu, Xiaoli
AU - Zeng, Yong
AU - Guan, Yong Liang
PY - 2013
Y1 - 2013
N2 - We study the achievable degrees of freedom (DoF) of the 3-user multiple-input multiple-output (MIMO) interference channel (IC), with possibly rank-deficient channel matrices. A two-layered linear processing scheme is proposed, with the inner layer zero-forcing part of the interfering links by applying a technique known as change of basis, and the outer layer performing interference alignment for the remaining interfering links. The achievable DoF of the proposed scheme is derived. In many special cases of the problem considered in this paper, our proposed two-layered scheme is DoF optimal.
AB - We study the achievable degrees of freedom (DoF) of the 3-user multiple-input multiple-output (MIMO) interference channel (IC), with possibly rank-deficient channel matrices. A two-layered linear processing scheme is proposed, with the inner layer zero-forcing part of the interfering links by applying a technique known as change of basis, and the outer layer performing interference alignment for the remaining interfering links. The achievable DoF of the proposed scheme is derived. In many special cases of the problem considered in this paper, our proposed two-layered scheme is DoF optimal.
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U2 - 10.1109/ICC.2013.6655010
DO - 10.1109/ICC.2013.6655010
M3 - Conference contribution
AN - SCOPUS:84891357302
SN - 9781467331227
T3 - IEEE International Conference on Communications
SP - 3058
EP - 3062
BT - 2013 IEEE International Conference on Communications, ICC 2013
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2013 IEEE International Conference on Communications, ICC 2013
Y2 - 9 June 2013 through 13 June 2013
ER -